In mathematics, Sobolev spaces for planar domains are one of the principal techniques used in the theory of partial differential equations for solving the Dirichlet and Neumann boundary value problems for the Laplacian in a bounded domain in the plane with smooth boundary. The methods use the theory of bounded operators on Hilbert space. They can be used to deduce regularity properties of solutions and to solve the corresponding eigenvalue problems.
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Hilbert space approach through Sobolevspaces does yield such information. The solution of the Dirichlet problem using Sobolevspacesforplanardomains can...
follow either from the theory of Sobolevspacesforplanardomains or from classical potential theory. Other methods for proving the smooth Riemann mapping...
derivatives leads to Sobolevspaces. Complete inner product spaces are known as Hilbert spaces, in honor of David Hilbert. The Hilbert space L 2 ( Ω ) , {\displaystyle...
function to the boundary of its domain to "generalized" functions in a Sobolevspace. This is particularly important for the study of partial differential...
assumed that v ∈ H 0 1 ( Ω ) {\displaystyle v\in H_{0}^{1}(\Omega )} (see Sobolevspaces). The existence and uniqueness of the solution can also be shown. We...
n-dimensional isoperimetric inequality is equivalent (for sufficiently smooth domains) to the Sobolev inequality on R n {\displaystyle \mathbb {R} ^{n}}...
smoothness, however, is the same everywhere and uses the theory of L2 Sobolevspaces on the torus. Let ψ be a smooth function of compact support on C, identically...
differentiability of f can be replaced by the weaker condition that f be in the Sobolevspace W1,2(D) of functions whose first-order distributional derivatives are...
x\in \Omega } . Then take the Hilbert space closure with respect to this inner product, this is the Sobolevspace H 1 ( Ω ) {\displaystyle H^{1}(\Omega...
"On spaces of Triebel-Lizorkin type". Arkiv för Matematik. 13: 123–130. doi:10.1007/BF02386201. MR 0380394. Peetre, J. (1975). "A remark on Sobolev spaces...
satisfying the principle of least action for the Kinetic energy of the flow. The kinetic energy is defined through a Sobolev smoothness norm with strictly more...
is represented as a planardomain whose boundary is fixed. The Dirichlet eigenvalues are found by solving the following problem for an unknown function...
weighted Sobolevspaces related to the numerical solution of degenerate elliptic equations. He found the optimal order of approximation for some methods...
\Delta u=-e^{2u}+K(x).} Using the continuity of the exponential map on Sobolevspace due to Neil Trudinger, this non-linear equation can always be solved...
{\displaystyle |\mathbf {u} |_{H^{1}(\Omega )^{n}}^{2}} of the solution in the Sobolevspace :::: H 1 ( Ω ) n {\displaystyle H^{1}(\Omega )^{n}} . In the case that...